1. Resting membrane potential2. Depolarization3. Action Potential Peak4. Repolarization5. Hyperpolarization6. Resting membrane potential To guide the description of each stage of an action potential, answer the following: What term defines each stage? Which ion gates are open and/or closed at each stage? Is there any ion movement (Na+ or K+) in relation to voltage at each stage? Biology Science Physiology PHYS 242